On 07/15/2016 01:00 PM, Jeffrey Walton wrote: >> Autoconf does not define anything specific. You can write an early >> AC_DEFINE in your configure.ac to trigger a specific witness used in all >> subsequent probes, but that's a per-package solution. > > Perfect, thanks. > > Can the Autoconf folks recommend a name for the define? Maybe > something like GNU_AUTOCONF or similar? The point of autoconf is to probe what your system behaves like when autoconf is not running. If you are writing headers that specifically behave differently during configure than they do in normal usage, that goes contrary to the goal of autoconf. I don't quite know what problem you are up against, but the best autoconf tests are the ones written as close to normal usage as possible, not ones that specifically try to circumvent normality. -- Eric Blake eblake redhat com +1-919-301-3266 Libvirt virtualization library http://libvirt.org
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